Physics
Grade-8
Easy
Question
154Hz sound frequency comes under ________ .
- Infra
- Ultra
- Audible
- None
Hint:
20Hz to 20kHz comes under the audible range.
The correct answer is: Audible
- Audible range of frequency is 20Hz to 20kHz foe an average human ear.
- Therefore the frequency of 154Hz lies in the range of audible frequencies.
- So, the correct option is c.
- Sounds with frequencies less than 20Hz are called infrasound.
- Sounds with frequencies more than 20kHz are called ultrasounds.
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